2KIU

Solution structure and backbone dynamics of the DNA-binding domain of FOXP1: Insight into its domain swapping

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D 1H-1H COSY	0.7-2.5 mM [U-99% 13C; U-99% 15N] The DNA-binding domain of FOXP1-1	20 mM phosphate buffer, 50 mM NaCl, 25 mM MgCl2, 50 mM Arg+Glu	0.245	5.5	ambient	300
2	2D 1H-1H NOESY	0.7-2.5 mM [U-99% 13C; U-99% 15N] The DNA-binding domain of FOXP1-1	20 mM phosphate buffer, 50 mM NaCl, 25 mM MgCl2, 50 mM Arg+Glu	0.245	5.5	ambient	300
3	2D 1H-1H TOCSY	0.7-2.5 mM [U-99% 13C; U-99% 15N] The DNA-binding domain of FOXP1-1	20 mM phosphate buffer, 50 mM NaCl, 25 mM MgCl2, 50 mM Arg+Glu	0.245	5.5	ambient	300
4	2D 1H-15N HSQC	0.7-2.5 mM [U-99% 13C; U-99% 15N] The DNA-binding domain of FOXP1-1	20 mM phosphate buffer, 50 mM NaCl, 25 mM MgCl2, 50 mM Arg+Glu	0.245	5.5	ambient	300
5	3D CBCA(CO)NH	0.7-2.5 mM [U-99% 13C; U-99% 15N] The DNA-binding domain of FOXP1-1	20 mM phosphate buffer, 50 mM NaCl, 25 mM MgCl2, 50 mM Arg+Glu	0.245	5.5	ambient	300
6	3D HNCA	0.7-2.5 mM [U-99% 13C; U-99% 15N] The DNA-binding domain of FOXP1-1	20 mM phosphate buffer, 50 mM NaCl, 25 mM MgCl2, 50 mM Arg+Glu	0.245	5.5	ambient	300
7	3D HNCACB	0.7-2.5 mM [U-99% 13C; U-99% 15N] The DNA-binding domain of FOXP1-1	20 mM phosphate buffer, 50 mM NaCl, 25 mM MgCl2, 50 mM Arg+Glu	0.245	5.5	ambient	300
8	3D CBCA(CO)NH	0.7-2.5 mM [U-99% 13C; U-99% 15N] The DNA-binding domain of FOXP1-1	20 mM phosphate buffer, 50 mM NaCl, 25 mM MgCl2, 50 mM Arg+Glu	0.245	5.5	ambient	300
9	3D HCCH-TOCSY	0.7-2.5 mM [U-99% 13C; U-99% 15N] The DNA-binding domain of FOXP1-1	20 mM phosphate buffer, 50 mM NaCl, 25 mM MgCl2, 50 mM Arg+Glu	0.245	5.5	ambient	300
10	3D C(CO)NH	0.7-2.5 mM [U-99% 13C; U-99% 15N] The DNA-binding domain of FOXP1-1	20 mM phosphate buffer, 50 mM NaCl, 25 mM MgCl2, 50 mM Arg+Glu	0.245	5.5	ambient	300

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE	600

NMR Refinement
Method	Details	Software
distance geometry, simulated annealing	The structures were calculated using a total of 1323 restraints, includng 1248 noe-derived distance constraints, 75 dihedral angle restraints, 34 hydrogen bond distance restraints, X-plor	X-PLOR

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	100
Conformers Submitted Total Number	20
Representative Model	1 (closest to the average)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	refinement	X-PLOR	3.185	Brunger

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.